From fc01ea1e27d5b124f0a1868d0ce569f156d58dfe Mon Sep 17 00:00:00 2001 From: Gunnar Rangoy Date: Fri, 23 Jan 2009 12:56:31 +0100 Subject: AVR32: macb - Search for PHY id This patch adds support for searching through available PHY-addresses in the macb-driver. This is needed for the ATEVK1100 evaluation board, where the PHY-address will be initialized to either 1 or 7. This patch adds a config option, CONFIG_MACB_SEARCH_PHY, which when enabled tells the driver to search for the PHY address. Signed-off-by: Gunnar Rangoy Signed-off-by: Paul Driveklepp Signed-off-by: Olav Morken Signed-off-by: Ben Warren --- drivers/net/macb.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'drivers/net/macb.c') diff --git a/drivers/net/macb.c b/drivers/net/macb.c index 98e8c73..af0409b 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -317,6 +317,30 @@ static void macb_phy_reset(struct macb_device *macb) netdev->name, status); } +#ifdef CONFIG_MACB_SEARCH_PHY +static int macb_phy_find(struct macb_device *macb) +{ + int i; + u16 phy_id; + + /* Search for PHY... */ + for (i = 0; i < 32; i++) { + macb->phy_addr = i; + phy_id = macb_mdio_read(macb, MII_PHYSID1); + if (phy_id != 0xffff) { + printf("%s: PHY present at %d\n", macb->netdev.name, i); + return 1; + } + } + + /* PHY isn't up to snuff */ + printf("%s: PHY not found", macb->netdev.name); + + return 0; +} +#endif /* CONFIG_MACB_SEARCH_PHY */ + + static int macb_phy_init(struct macb_device *macb) { struct eth_device *netdev = &macb->netdev; @@ -325,6 +349,13 @@ static int macb_phy_init(struct macb_device *macb) int media, speed, duplex; int i; +#ifdef CONFIG_MACB_SEARCH_PHY + /* Auto-detect phy_addr */ + if (!macb_phy_find(macb)) { + return 0; + } +#endif /* CONFIG_MACB_SEARCH_PHY */ + /* Check if the PHY is up to snuff... */ phy_id = macb_mdio_read(macb, MII_PHYSID1); if (phy_id == 0xffff) { -- cgit v1.1